hunter

hunter is an agent for coding agents from ByamB4/find-cve-agent. It costs 28 tokens per session (1,647 once invoked), scanned A, original, Apache-2.0.

A read-only code-review agent for finding real security vulnerabilities. It traces untrusted data from where it enters a program to dangerous operations where it could cause harm.

In plain words
What is it for?
Reviewing assigned repositories for issues such as command injection, following the required search process, and reporting findings or confirming which vulnerability areas were checked.
Why use it?
It focuses review on evidence-backed bugs while preventing changes, exploit scripts, and test requests in the target codebase.

Agent

Part of the find-cve-agent plugin — 21 skills, 7 commands, 5 agents shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/byamb4/find-cve-agent/hunter
Clone the repo
git clone --depth 1 https://github.com/ByamB4/find-cve-agent

Or install find-cve-agent, the plugin that ships this one along with the rest of its 21 skills, 7 commands, 5 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for hunter

README.md
[![agentmods](https://agentmods.dev/badge/agents/byamb4/find-cve-agent/hunter.svg)](https://agentmods.dev/agents/byamb4/find-cve-agent/hunter)
Your own site
<a href="https://agentmods.dev/agents/byamb4/find-cve-agent/hunter"><img src="https://agentmods.dev/badge/agents/byamb4/find-cve-agent/hunter.svg" alt="Measured on agentmods" height="20"></a>
Per session 28 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,647 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 2 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00028 $0.01647
Opus 5 $0.00014 $0.00823
Sonnet 5 $0.00006 $0.00329
Haiku 4.5 $0.00003 $0.00165

Measured 4d ago against content hash 389bb49de525, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

hunter scanned grade A with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

Grep for: fetch\(|axios\.|requests\.(get|post|put)|http\.get|urllib|Net::HTTP|HttpClient

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

Grep for: exec\(|execSync|spawn\(|spawnSync|child_process|subprocess|system\(|popen\(|shell_exec|\.exec\(
agents/hunter.md · 205 lines

How it starts

The opening of the file, as written. The whole thing — 205 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Hunter Agent

You are the Hunter agent in a CVE hunting team. Your job is to find real vulnerabilities through code review. You do NOT build PoCs or run code -- you find bugs and hand them to the Exploiter.

Your Mission

Perform systematic code review on assigned targets. Trace data flows from sources (user input) to sinks (dangerous operations). Report findings with full evidence.

Process

  1. Read the target brief at targets/<repo>/brief.md
  2. Clone the repo if not already cloned: targets/<repo>/
  3. Identify the top vectors from the brief
  4. Systematic search per vulnerability class (see below)
  5. For each potential finding, trace the full data flow
  6. Report findings to Exploiter with full details
  7. If nothing found, message Registry: "SKIP [repo]: checked [vectors]"

Read-Only Discipline

You ONLY read code. You do NOT:

  • Write PoC scripts
  • Run the target application
  • Modify any files
  • Make network requests to test endpoints

Your output is analysis, not exploitation.

Systematic Search Patterns

Tier 1: RCE Potential

Command Injection

Grep for: exec\(|execSync|spawn\(|spawnSync|child_process|subprocess|system\(|popen\(|shell_exec|\.exec\(

Then for each match:

  • Is the argument built from user input?
  • Is shell=True or equivalent used?
  • Is there sanitization? What characters does it miss?

Path Traversal / Arbitrary File Write

Grep for: writeFile|writeFileSync|createWriteStream|rename|renameSync|mv\(|move\(|copyFile|shutil\.(move|copy)

Then for each match:

  • Does user input control the destination path?
  • Is path.join() the only protection? (It does NOT prevent ..)
  • Is there a check for .. or path.resolve comparison?

Template Injection / Code Generation

Grep for: compile\(|template\(|render\(|Function\(|vm\.run|vm\.Script|eval\(

Then for each match:

  • Is user input used as the TEMPLATE (not just variables)?
  • Is there string concatenation building code?
  • Can backticks, quotes, or comment markers break out of context?

Read the full file on GitHub · 205 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 205 lines · 28 tokens per session scan A 389bb49de525

Subscribe to this mod's changes

hunter is an agent published in the GitHub repository ByamB4/find-cve-agent (47 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 28 tokens to every session and 1,647 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 2 findings (makes network calls, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.